Every one knows polymorphism is a great advantage of inheritance. Another Benefit which i find in inheritance is that helps to create replica of real world. For example in pay roll system we deal managers developers ,office boys etc. if we inherit all these class with super class Employee. it makes our program more understandable in context of real world that all these classes are basically employees. And one more thing classes not only contain methods they also contain attributes. So if we contain attributes generic to employee in the Employee
class like social security number age etc. it would provide greater code reuse and conceptual clarity and of course polymorphism. However while using inheritance things we should keep in mind is the basic design principle "Identify the aspects of your application that vary and separate them from that aspects which change". You should never implement those aspect of application that change by inheritance instead use composition. And for those aspects which are not changeable u should use inheritance ofcourse if an obvious "is a" relation lies.
